This is a great Preamp.
Very versatile, and transparent.
I would never sell this if I didn't have to.
$675 + shipping cost.
Great for playing multiple instruments live.
The owner started SWR, then Raven Labs, and is now retired - so this preamp is getting hard to find.
 
Here are the specs:
http://www.raven-labs.com/pages/products/usip/usip.html
 
 
 

very nice....how old is it, and any trade possibilities??
 
thanks,
Jeff

Steve Rabe's designs are just wonderful. I have one of his headphone amps and I keep considering selling it but always back out when I sit down to play through it to make sure it's still all good. This would make a Series owner very happy!